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126974628 = 223411231549
BaseRepresentation
bin1111001000101…
…11101010100100
322211220222110000
413210113222210
5230001142003
620333301300
73101160264
oct744275244
9284828400
10126974628
1165745a10
1236634830
13203c9721
1412c137a4
15b2321a3
hex7917aa4

126974628 has 120 divisors (see below), whose sum is σ = 378100800. Its totient is φ = 36780480.

The previous prime is 126974621. The next prime is 126974629. The reversal of 126974628 is 826479621.

It is a happy number.

126974628 is a `hidden beast` number, since 12 + 6 + 9 + 7 + 4 + 628 = 666.

It is a super-2 number, since 2×1269746282 = 32245112311476768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126974621) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 81198 + ... + 82746.

It is an arithmetic number, because the mean of its divisors is an integer number (3150840).

Almost surely, 2126974628 is an apocalyptic number.

126974628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126974628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189050400).

126974628 is an abundant number, since it is smaller than the sum of its proper divisors (251126172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126974628 is a wasteful number, since it uses less digits than its factorization.

126974628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1588 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 126974628 is about 11268.3019128882. The cubic root of 126974628 is about 502.6190940711.

The spelling of 126974628 in words is "one hundred twenty-six million, nine hundred seventy-four thousand, six hundred twenty-eight".

Divisors: 1 2 3 4 6 9 11 12 18 22 23 27 33 36 44 46 54 66 69 81 92 99 108 132 138 162 198 207 253 276 297 324 396 414 506 594 621 759 828 891 1012 1188 1242 1518 1549 1782 1863 2277 2484 3036 3098 3564 3726 4554 4647 6196 6831 7452 9108 9294 13662 13941 17039 18588 20493 27324 27882 34078 35627 40986 41823 51117 55764 68156 71254 81972 83646 102234 106881 125469 142508 153351 167292 204468 213762 250938 306702 320643 391897 427524 460053 501876 613404 641286 783794 920106 961929 1175691 1282572 1380159 1567588 1840212 1923858 2351382 2760318 2885787 3527073 3847716 4702764 5520636 5771574 7054146 10581219 11543148 14108292 21162438 31743657 42324876 63487314 126974628